Overview
The LP5907MFX-3.3/NOPB is a low-noise, ultra-low-dropout voltage regulator produced by Texas Instruments. This Linear Low-Dropout (LDO) regulator is designed to supply up to 250mA of output current, making it suitable for a variety of applications requiring low noise and high power supply rejection ratio (PSRR). The device is particularly tailored for RF and analog circuits, offering class-leading noise performance without the need for a noise bypass capacitor.
The LP5907MFX-3.3/NOPB operates within an input voltage range of 2.2V to 5.5V and provides a fixed output voltage of 3.3V. It features thermal-overload and short-circuit protection, ensuring robust operation under various conditions. The device is available in a SOT-23 (DBV) package with 5 pins, making it compact and suitable for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.2V to 5.5V | V |
| Output Voltage | 3.3V (fixed) | V |
| Output Current | Up to 250mA | mA |
| Output Voltage Tolerance | ±2% | % |
| PSRR at 1kHz | 82dB | dB |
| Output Voltage Noise | < 6.5µVRMS | µVRMS |
| Quiescent Current (Enabled) | 12µA | µA |
| Dropout Voltage (Typical) | 120mV | mV |
| Operating Junction Temperature | -40°C to 125°C | °C |
| Package Type | SOT-23 (DBV) | - |
| Number of Pins | 5 | - |
Key Features
- Low output voltage noise: < 6.5µVRMS
- High PSRR: 82dB at 1kHz
- Very low quiescent current (enabled): 12µA
- Low dropout voltage: 120mV (typical)
- Stable with 1µF ceramic input and output capacitors; no noise bypass capacitor required
- Remote output capacitor placement
- Thermal-overload and short-circuit protection
- Operating junction temperature range: -40°C to 125°C
Applications
- Smartphones
- Tablets
- Communications equipment
- Digital still cameras
- Factory automation
- RF and analog circuits
Q & A
- What is the input voltage range of the LP5907MFX-3.3/NOPB?
The input voltage range is from 2.2V to 5.5V.
- What is the fixed output voltage of the LP5907MFX-3.3/NOPB?
The fixed output voltage is 3.3V.
- What is the maximum output current of the LP5907MFX-3.3/NOPB?
The maximum output current is up to 250mA.
- What is the PSRR of the LP5907MFX-3.3/NOPB at 1kHz?
The PSRR is 82dB at 1kHz.
- Does the LP5907MFX-3.3/NOPB require a noise bypass capacitor?
No, it does not require a noise bypass capacitor.
- What type of capacitors are recommended for stability with the LP5907MFX-3.3/NOPB?
1µF ceramic input and output capacitors are recommended, with X7R capacitors being preferred.
- What is the operating junction temperature range of the LP5907MFX-3.3/NOPB?
The operating junction temperature range is from -40°C to 125°C.
- Does the LP5907MFX-3.3/NOPB have thermal-overload and short-circuit protection?
- What is the typical dropout voltage of the LP5907MFX-3.3/NOPB?
The typical dropout voltage is 120mV.
- In what package is the LP5907MFX-3.3/NOPB available?
